CN105813944A - Locking structure, container utilizing locking structure, and assembling device for container - Google Patents

Abstract

The lock receiving part (23) is extended from the branch point (16) on the fold line between the first panel (12) and the second panel (13) toward the third panel (44) side on the first panel (12) The first oblique line (18), the second oblique line extending toward the third panel (44) side on the second panel (13) from the branch point (16), and at the far end of the first oblique line (18) and The cut portion (24) extending between the distal ends of the second oblique line (19) is defined. A locking receiver (23) extends in an oblique manner from between the first panel (12) and the second panel (13) in the assembled state. A locking portion (48) is formed on the third panel (44), and is arranged to be locked to the cut portion (24) side of the lock receiving portion (23) in an assembled state.

Description

Locking structure, container utilizing locking structure, and assembly device for container

technical field

The present invention relates to a locking structure for maintaining the assembled state of paper products, a file box-shaped container using the locking structure, and a device for automatically assembling the container.

Background technique

Patent Document 1 discloses a tray made of corrugated cardboard and provided with a closing flap covering a part of the upper end opening of the tray body. In such a file box, fruits or vegetables are stored in the file box body in a state where the closing flap is inclined outward. After the fruits or vegetables are stored, the closing flap is folded horizontally, and the insertion projections of the locking pieces formed on both edges of the closing flap are inserted into the insertion holes formed in the file box body, thereby assembling The file box.

However, when assembling the file box disclosed in Patent Document 1, when maintaining this state, it is necessary to occupy the operator's fingers to hold the closing flap and the lock piece, and place and insert the insertion part of the lock piece into the insertion hole. , complicating the assembly operation. Further, it is extremely difficult to automatically assemble such a file box, since the file box requires a complicated operation using a device, and the device requires a complicated mechanism, so that the cost is increased.

prior art documents

patent documents

Patent Document 1: Japanese Patent No. 4515601

Contents of the invention

The problem to be solved by the present invention

The object of the present invention is to provide a locking structure and a container with excellent assembly operability and capable of automatic assembly of the container using a device. Another object of the present invention is to provide a device for assembling containers using the locking structure of the present invention.

way to solve this problem

In order to solve the above-mentioned problems, a locking structure according to the present invention includes a first panel, a second panel formed continuously with the first panel and folded relative to the first panel, and a third panel provided along an inner surface of the second panel. The container also includes a first oblique line extending from a branch point on the fold line between the first panel and the second panel toward the third panel side on the first panel and inclined relative to the fold line from the branch point toward the second panel The second oblique line extending on the third panel side and inclined relative to the fold line, and the cutting portion extending between the distal end of the first oblique line and the distal end of the second oblique line, composed of the first oblique line, the second oblique line oblique lines, and a locking receiving portion defined by the cutting portion, and extending between the first panel and the second panel in an inclined manner in an assembled state; and a locking portion formed on the third panel, and by assembling the third panel and locked to the cutout side of the locking receiver so that the third panel extends along the inner surface of the second panel. The crease lines between the first and second oblique lines do not include the crease lines disposed entirely along the boundary portion between the first panel and the second panel. The first and second oblique lines include straight notches and curved notches. The first and second oblique lines include combinations of two or more straight lines and curved lines.

A container to which the locking structure is applied includes a first panel, a second panel formed continuously with the first panel and folded relative to the first panel, and a third panel disposed along an inner surface of the second panel. The container also includes a first diagonal line extending from a branch point on the fold line between the first panel and the second panel toward the third panel side on the first panel and inclined relative to the fold line, from the branch point toward the second panel The second oblique line extending on the third panel side and inclined relative to the fold line, and the cutting portion extending between the distal end of the first oblique line and the distal end of the second oblique line, formed by the first oblique line, the second oblique line oblique lines, and a locking receiving portion defined by the cutting portion, and the locking receiving portion extends between the first panel and the second panel in an inclined manner in an assembled state; and is formed on the third panel and is formed by assembling the third panel The lock portion is locked to the cut portion side of the lock receiving portion so that the third panel extends along the inner surface of the second panel.

In the present invention, when the second panel is folded relative to the first panel, the lock receiving portion defined by the first and second oblique lines and the cut portion is lifted three-dimensionally relative to the first panel and the second panel. Therefore, only by disposing the third panel along the second panel, the locking portion of the third panel can be easily locked to the locking receiving portion, and thus the assembling operation can be enhanced. Further, due to such a locking structure, complicated and high-precision positioning operations are not required, thus enabling automatic assembly of containers with one device.

The container is preferably arranged so as to provide a cut-out positioned adjacent the cut-out side of the locking receiver, into which cut-out the corner of the third panel falls when assembled, and a portion of the cut-out is formed by the edge of the cut-out. In this configuration, the corner of the third panel is made to drop into the locking portion when locking the locking portion to the lock receiving portion, so that the corner of the third panel can be prevented from interfering with the first panel, and can be easily is locked to the lock receiver.

The specific configuration of the container is such that the container includes: a bottom panel forming a first panel; a pair of side panels forming a second panel connected to both sides of the bottom panel and arranged opposite to each other; connected to the other two sides of the bottom panel and arranged opposite to each other A pair of end panels; a closure flap connected to the end panels and covering in an assembled state a part of the upper end formed by the side panels and the end panels; a lock formed by a third panel and connected to the closure flap, wherein in the lock The lock is provided on the inner surface of the side panel by folding the closure flap relative to the end panel in a state of being folded relative to the closure flap, and the lock portion is locked by rotating the lock portion toward the cut portion of the lock receiving portion. In this container, when the locking member is folded relative to the closure flap, an elastic restoring force acts on the locking lug due to the hardness (rigidity) of the locking member. Therefore, only by pushing the folding flap to be folded, the lock piece slides into contact with the inner surface of the side panel, and the lock portion rotates toward and locks to the lock receiver, so that the assembling operation can be further enhanced.

Further, the container assembling device for assembling the container includes a bottom panel forming a first panel, a pair of side panels forming a second panel connected to both sides of the bottom panel and disposed opposite to each other; connecting the other two sides of the bottom panel and A pair of end panels arranged opposite each other, a closure flap connected to the end panels and covering in assembled state a part of the upper end formed by the side panels and end panels, formed by a third panel and connected to the lock of the closure flap. In a state where the locking member is folded relative to the closing flap, the locking member is provided on the inner surface of the side panel by folding the closing flap relative to the end panel, and the locking portion is locked by rotating the locking portion toward the cut portion of the locking receiving portion. locking.

The container assembling device includes a positioning member for positioning the locking member, thereby preventing the locking member from interfering with the end edge of the side panel due to the elastic restoring force, so that the locking member cannot be disposed on the inner surface side of the side panel. Further, when the closing flap is rotated by the swing member, the distal end of the locking piece is arranged on the inner surface side of the side panel and, thereafter, the positioning of the locking piece by the positioning member is released, and the locking piece is in the inner surface side of the side panel. Rotation when surfaces are in sliding contact. Then, due to the rotation of the closing flap by the swing member, the locking member is rotated to a predetermined position and locked at the predetermined position. Therefore, the container can be easily assembled automatically.

The container assembling apparatus further includes a movable receiving part provided on the bottom side of the guide frame and receiving the bottom surface side of the bottom panel. In this configuration, the movement of the container is prevented by the force generated by the swinging part, allowing for easy assembly.

Effect of the present invention

In the locking structure of the present invention, when the second panel (side panel) is folded relative to the first panel (bottom panel), the lock receiving portion defined by the first and second oblique lines and the cut portion is relatively relative to the first panel and the first panel (bottom panel). The second panel is raised three-dimensionally. Therefore, only by providing the third panel (lock piece) along the second panel, the locking portion of the third panel can be easily locked to the lock receiving portion. In the container using this locking structure, by rotating the closing flap, the locking member (third panel) acting with elastic restoring force is rotated while slidingly contacting the inner surface of the side panel (second panel), so the locking part Can be easily and accurately locked to the raised lock receiver. In this container assembling device, the positioning of the locking piece on the inner surface side of the side panel is performed by the positioning member, so that the locking piece is prevented from interfering with the terminal edge of the side panel when the closing flap is rotated by the swinging member. Therefore, it is easy to realize automatic assembly of containers by using the device.

Description of drawings

Fig. 1 is the perspective view of the container of the first embodiment of the present invention;

Fig. 2 is an expanded view of the container in Fig. 1;

Figure 3 is a perspective view of the container before assembly;

Figure 4 is a partially enlarged perspective view showing the lock and the lock receiver during assembly of the container;

Figure 5 is a partially enlarged perspective view showing the lock and the lock receiver during assembly of the container;

Figure 6 is a partially enlarged perspective view showing the lock and the lock receiver during assembly of the container;

FIG. 7 is a partially enlarged perspective view showing the locking member and the locking receiving portion in the assembled state of the container;

Fig. 8 is an expanded view of a container according to a second embodiment;

Fig. 9 is an expanded view of a container according to a third embodiment;

Figure 10 is a perspective view of a container according to a fourth embodiment;

Figure 11 is an expanded view of the container in Figure 10;

Figure 12 is a perspective view showing the container during assembly of the container in Figure 10;

Figure 13 is a perspective view of a container according to a fifth embodiment;

Fig. 14 is an expanded view of the container in Fig. 13;

Figure 15 is an enlarged front view illustrating a first variation of the locking receiver;

Figure 16 is an enlarged front view showing a second variation of the locking receiver;

Fig. 17 is an enlarged front view showing a third variation of the locking receiver;

Fig. 18 is an enlarged front view showing a fourth variation of the locking receiver;

Fig. 19 is a partially enlarged developed view showing a fifth variation of the locking recess;

Figure 20 is a plan view illustrating a fully automatic container assembly device for automatically assembling containers;

Figure 21 is a side view showing the plate supply device in Figure 20;

Figure 22 is a cross-sectional view showing the container assembly device in Figure 20;

Fig. 23 is a perspective view illustrating a state in which locking member positioning is performed.

detailed description

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

(first embodiment)

FIG. 1 shows a file box 10 of a first embodiment, which is formed using corrugated cardboard and has the locking structure of the present invention. The file box 10 forming a container is a box including: a bottom panel (first panel) 12 ; side panels (second panel) 13 ; and end panels 34 . The upper end of the file box 10 is opened, and the upper end opening is partially covered by the closing flap 38 . The corrugated board has a well-known structure in which a central core of corrugated shape is placed between a front liner and a back liner.

As shown in Figure 2, a pair of side panels 13, 13 are attached to the long sides (opposite sides) of the rectangular bottom panel 12, and a pair of end panels 34, 34 are attached to the short sides (opposite sides) of the rectangular bottom panel 12. ).

The side panels 13 have a rectangular plate shape, are formed continuously with the bottom panel 12, and are folded at right angles with respect to the bottom panel 12 in an assembled state. A circular ventilation hole 29 is formed in the side panel 13 through which air is exchanged between the inside and outside of the document box 10 . A side panel fold line (first fold line) 15 , a lock receiving portion 23 , and a cut-out portion 27 are formed on each boundary portion between the bottom panel 12 and the side panel 13 . The fold line is generally formed by a score line formed in the corrugated board by scoring from the backing side, thereby reducing the panel thickness of the corrugated board by compression.

The side panel fold line 15 is linearly formed on the boundary portion between the bottom panel 12 and the side panel 13 except for the lock receiving portion 23 and the cut-out portion 27 . Side panel fold lines 15 are formed between the corners of the bottom panel 12 and the cut-outs 27 and between the branch points 16 , 16 of the pair of lock receivers 23 , 23 .

The lock receiving portion 23 is formed by an inner region having a quadrangular shape surrounded by the bottom panel slanted fold line (first slant line) 18 , the side panel slant fold line (second slant line) 19 and the cut portion 24 . When the file box 10 is in the assembled state, the lock receiving portions 23 , 23 extend between the bottom panel 12 and the side panels 13 in an oblique manner. The pair of lock receiving portions 23, 23 are arranged along the side panel fold line 15 with a predetermined distance therebetween. The lock receiving portion 23 is formed such that the width of the lock receiving portion 23 increases from a branch point 16 located on the side panel fold line 15 toward a lock piece 44 located closest to the branch point 16 described later. The branch point 16 is provided on the central side of the side panel fold line 15 between the locking pieces 44 , 44 located at both ends of the file box 10 in the assembled state. The lock receiving portion 23 is formed so as to spread outward from the branch point 16 .

A bottom panel sloped fold line 18 extends on the bottom panel 12 from the branch point 16 and is sloped to intersect the side panel fold line 15 . In the assembled state, the bottom panel slanted fold line 18 faces the closing flap 38 (lock 44 ) provided at the position closest to the branch point 16 outside (outside) the pair of closing flaps 38, 38 located at both ends of the file box 10. extend.

A side panel sloped fold line 19 extends on the side panel 13 from the branch point 16 and is sloped to intersect the side panel fold line 15 . In the assembled state, the side panel slanted fold line 19 extends toward the lock member 44 provided at the position closest to the branch point 16 outside (outside) the pair of lock members 44 , 44 located at both ends of the file box 10 .

The angle (included angle) θ1 formed between the inclined fold line 19 of the side panel and the inclined fold line 18 of the bottom panel is set to be less than 180 degrees, and is preferably set to an angle between 20-90 degrees. When the angle θ1 is set to 180 degrees, the lock receiver 23 cannot be lifted from the bottom panel 12 and the side panel 13 in the assembled state. When the angle θ1 is set larger than 180 degrees, the lock receiving portion 23 extends in the opposite direction so that the lock piece 44 cannot be locked to the lock receiving portion 23 . When the angle θ1 is set to be smaller than 20 degrees, the amount by which the lock receiver 23 is lifted inward (lock space) becomes small, and therefore, the assembly workability becomes poor. When the angle θ1 is set larger than 90 degrees, the amount by which the lock receiving portion 23 is lifted inward becomes large, so that the locked lock piece 44 is easily released from the lock receiving portion 23 .

In this embodiment, the angle θ1 formed between the bottom panel inclined fold line 18 and the side panel inclined fold line 19 is set to 40 degrees. Taking this case as an example, the angle formed between the side panel slant fold line 19 and an extension line (not shown in the drawing) of the side panel fold line 15 extending inside the lock receiving portion 23 is set to 22 degrees, and at The angle formed between the bottom panel sloped fold line 18 and the extension line was set to be 18 degrees. In this manner, instead of forming the inclined fold lines 18, 19 line-symmetrically with respect to the side panel fold line 15, the inclination angle of the side panel inclined fold line 19 is set to a large angle, which can ensure a locking space in the vertical direction.

Cut portion 24 is formed by cut line 21 and cut edge 25 of cut portion 27 and extends between the distal end of bottom panel sloped fold line 18 and the distal end of side panel sloped fold line 19 . A cut line 21 is formed on the side panel 13 and extends between the distal end of the side panel sloped fold line 19 and the side panel fold line 15 in a direction orthogonal to the side panel fold line 15 . By forming the cutout 27 on the bottom panel 12 , the cutout 25 is formed by the edge of the inclined portion of the cutout 27 . A cut edge 25 is formed between the end of the cut line 21 on the bottom panel 12 and the distal end of the bottom panel sloped fold line 18 . The cut edge 25 is bent (inclined) relative to the tangent 21 towards the branch point 16 . In the assembled state of the file box 10 , the cut portion 24 is separated from the side panel 13 and the bottom panel 12 .

The cut-out portion 27 is formed on the boundary portion on the bottom panel 12 side between the bottom panel 12 and the side panel 13 along the side panel fold line 15 side. The cut-out portion 27 is hexagonal and is provided adjacent to the lock receiving portion 23 . One side of the cut-out portion 27 disposed adjacent to the lock receiving portion 23 forms a cut-out edge 25 of the lock receiving portion 23 . The cutout 27 is formed to have a profile size to allow locking lugs (corners) 47 described later to drop into the cutout 27 in the assembled state.

Folding flaps 30 arranged along the inner surface of the end panels 34 in the assembled state are connected to the two end edges of the side panels 13 . A folding flap fold line 31 is formed at each boundary portion between the side panel 13 and the folding flap 30 . In the assembled state, upwardly protruding insertion lugs 32 are formed at the outer corners of the folding flap 30 .

The end panel 34 has a rectangular plate shape, and an end panel fold line 35 and a stacking hole 36 are formed on each boundary portion between the bottom panel 12 and the end panel 34 . The end panel fold line 35 is formed on the boundary portion between the bottom panel 12 and the end panel 34 except for the position of the stacking hole 36 . The stack holes 36 are each formed as a hole having an approximately rectangular shape, and are formed in the range of the area from the bottom panel 12 to the end panel 34 .

A closure flap 38 is connected to one end edge of the end panel 34 on the side opposite to the bottom panel 12 . The closing flap 38 extends inward in the horizontal direction from the upper end of the end panel 34 in the assembled state, and is arranged so as to cover a part of the upper end opening of the file box 10 . The closure flap 38 is formed to extend between the two side panels 13, 13 so that the file box 10 can be stacked in a stable state during transport. A closing flap fold line (second fold line) 39 , an insertion hole 40 , and a stacking protrusion 42 are formed on each boundary portion between the end panel 34 and the closing flap 38 . The closing flap fold line 39 is formed on the boundary portion located other than the area where the stacking protrusion 42 is formed. The insertion holes 40 are each formed by a rectangular hole formed in the closure flap 38 along the closure flap fold line 39 . A stacking protrusion 42 for stacking the file boxes 10 is formed inside the insertion hole 40 and protrudes integrally from one end edge of the end panel 34 toward the closing flap 38 .

Locks (third panels) 44 provided along the inner surfaces of the side panels 13 in the assembled state are connected to both outer edges of the closure flap 38 . A lock fold line 46 is formed on each boundary between the closure flap 38 and the lock 44 . Outwardly protruding locking lugs 47 are formed on outer corners of the locking piece 44 . In the assembled state, the locking lug 47 is locked to the cutting portion 24 side of the locking receiving portion 23 . In the assembled state, the locking lug 47 defines a locking recess (locking portion) 48 formed at the outer end edge of the locking piece 44 and located on the side of the locking receiving portion 23 .

When assembling the file box 10 formed from a blank, first, as shown in FIG. When the side panels 13 are folded, the cut line 21 is separated from the side panels 13 and the lock receiving portion 23 is lifted three-dimensionally with respect to the bottom panel 12 and the side panels 13 , thereby exposing the cut portion 24 .

Next, the end panel 34 is folded to lift the end panel 34 relative to the bottom panel 12 and the lock 44 is folded inwardly relative to the end panel 34 . Then, as shown in FIG. 4 , the end panel 34 is maintained in a lifted state in which the end panel 34 is disposed along the outer surface of the fold flap 30 . During this phase of operation, the insertion lugs 32 and the stacking projections 42 of the folding flap 30 cooperate with each other. Further, an elastic restoring force toward the outside of the side panel 13 acts on the lock 44 due to the elasticity of the blank (hardness (rigidity) of the corrugated cardboard).

Then, as shown in FIG. 5 , each locking member 44 is folded inwardly against the elastic restoring force to be placed on the inner side surface of the side panel 13, and toward the bottom panel by pushing the closing flap 38 around the closing flap fold line 39. 12 spins. As a result, the locking lug 47 is rotated toward the locking receiving portion 23 when the locking piece 44 contacts the inner surface of the side panel 13 .

Therefore, as shown in FIG. 6 , the locking lug 47 overcomes the locking receiving portion 23 and rotates toward the cut-out portion 27 while being in contact with the surface of the locking receiving portion 23 . As a result of this, the locking member 44 moves inwardly between the side panels 13,13.

Thereafter, as shown in FIG. 7 , when the closing flap 38 is rotated to the horizontal position, the locking lug 47 overcomes the locking receiving portion 23 , the locking member 44 moves outward, and the locking lug 47 falls into the cut-out portion 27 . Then, the lock recessed portion 48 is locked to the cut portion 24 side of the lock receiving portion 23 . By performing these operations, the lifted state of the end panel 34 is maintained so that the assembly of the file box 10 is completed.

As described above, when the file box 10 is assembled, the lock receiver 23 is three-dimensionally lifted with respect to the bottom panel 12 and the side panels 13 so that the lock recess 48 can be easily locked to the lock receiver 23 . Further, only by pushing the closing flap 38 toward the bottom panel 12 to fold the closing flap 38 and by rotating the locking member 44 along the side panel 13, the locking recess 48 can be locked to the locking receiving portion 23, and therefore, the assembling operation can be Enhanced with simple setup. Further, when locking the locking lug 47 to the locking receiving portion 23 by rotating the locking member 44, the locking lug 47 falls into the cut-out portion 27, therefore, the locking lug 47 can be prevented from interfering with the bottom panel 12, and the locking recess 48 can thus be easily locked onto the locking receiver 23 .

(second embodiment)

Fig. 8 shows the file box 10 of the second embodiment. Components identical to those of the document case 10 of the first embodiment are given the same reference numerals, and descriptions of these components are omitted. The file box 10 of the present embodiment differs from the file box 10 in the first embodiment in that a lock receiving portion 23 and a cut-out portion 27 are formed on each boundary portion between the side panel 13 and the folding flap 30 . In the second embodiment, the folding flap 30 corresponds to the first panel, the side panel 13 corresponds to the second panel, and the locking member 44 corresponds to the third panel. A locking recess 48 is formed on the outer end edge 45 of each locking piece 44 . In the second embodiment, the cutout portion 27 may not be formed.

In the second embodiment, the side panel 13 is folded relative to the bottom panel 12 , and the folding flap 30 is folded relative to the side panel 13 . By doing so, each locking receiver 23 is lifted so that it can be tilted between the side panel 13 and the folding flap 30 . Then, the end panel 34 is folded with respect to the bottom panel 12 , and then, the closing flap 38 is folded with respect to the end panel 34 in a state where the lock member 44 is folded with respect to the closing flap 38 , thereby assembling the file box 10 . By assembling the file box 10 in this way, the outer end edge 45 of each locking piece 44 is disposed at an intermediate position between the upper end and the lower end of the side panel 13 along the inner surface of the side panel 13 . In this state, the lock receiver 23 and the lock recess 48 are locked to each other. Therefore, the file box 10 of the present embodiment can achieve the same operations and beneficial effects as those of the file box 10 of the first embodiment.

(third embodiment)

Fig. 9 shows a file box 50 of the third embodiment. In the file box 50 , side panels (second panels) 52 are connected to long sides of a bottom panel (first panel) 51 , and end panels 53 are connected to short sides of the bottom panel 51 . A lock receiving portion 55 , a cut-out portion 56 and a side panel fold line (first fold line) 54 are formed on each boundary portion between the bottom panel 51 and the side panel 52 . An end panel fold line (second fold line) 57 is formed on each boundary portion between the bottom panel 51 and the end panel 53 . A rectangular lock (third panel) 58 is attached to the outer edge of the end panel 53 . A lock piece fold line 59 is formed on each boundary portion between the lock piece 58 and the end panel 53 . A locking lug 60 protruding toward the side panel 52 is formed at an inner corner of each locking piece 58 , and a locking recess 61 is formed between the locking lug 60 and the outer end edge of the locking piece 58 .

When assembling the file box 50 , the side panels 52 are folded so as to lift the side panels 52 relative to the bottom panel 51 . By folding the side panels 52 in this way, the lock receiver 55 is lifted three-dimensionally with respect to the bottom panel 51 and the side panels 52 . Then, the locking member 58 is folded relative to the end panel 53 , and the end panel 53 is then folded to lift the end panel 53 relative to the bottom panel 12 . Specifically, each end panel 53 is rotated around the end panel 57 to a lifted state by pushing the end panel 53 when the locking member 58 slides into contact with the inner surface of the side panel 52 . As a result, each locking lug 60 is rotated toward the lock receiver 55 , and the lock recess 61 is locked to the lock receiver 55 , whereby the file box 50 is assembled. Therefore, the document box 50 of the third embodiment having such a configuration can achieve the same operations and advantageous effects as those of the document box 10 of the first embodiment.

(fourth embodiment)

10 to 12 show a document box 10 of a fourth embodiment. As shown in FIGS. 10 to 11, the document box 10 of the present embodiment is very different from the document box 10 of the first embodiment in that the stacking hole 36 and the stacking protrusion 42 for stacking the document boxes 10 are not formed and The insertion lug 32 and the insertion hole 40 are used to perform the positioning of the folding flap 30 . Components identical to those of the document case 10 of the first embodiment are given the same reference numerals, and descriptions of these components are omitted.

A pair of lock receiving portions 23, 23 and a pair of cut-out portions 27, 27 are formed on each boundary portion between the bottom panel (first panel) 12 and the side panel (second panel) 13, and the side panel fold line (second panel) A fold line) 15 is formed on the boundary portion other than the position where the lock receiving portion 23 and the cut-out portion 27 are formed. Except for these parts, the lock receiving portion 23 is formed so that the tangent line 21 defining the peripheral portion of the lock receiving portion 23 and the cut-off side 25 of the cutting portion 24 are linearly formed so that the lock receiving portion 23 has a triangular shape. Further, a cut-out portion 27 is formed on the bottom panel 12 along the side panel fold line 15 to have a quadrangular shape.

A curved locker fold line 46 having a predetermined curvature bent toward the side of the folding flap 38 is formed on each boundary portion between the closing flap 38 and the locker 44 (third panel). The formation of the folding line 46 of the locking part strengthens the elastic restoring force, and when the locking part 44 is folded relative to the closing flap 38 , the locking part 44 restores to the original plane shape through the elastic restoring force. The configuration in which the lock fold line 46 is formed in a curved manner is applicable to the file boxes 10 of the first and second embodiments, and is also applicable to the lock fold line 59 of the third embodiment.

Further, a locking lug 47 is formed at an outer corner of each locking piece 44 , and a locking recess 48 is formed at an outer end edge of each locking piece 44 . The locking recess (locking edge) 48 of the present embodiment is linearly formed so that in the assembled state, the corner portion of the distal end of the locking lug 47 at the bottom protrudes the most toward the locking receiving portion 23 side, and the locking recess 48 The corner portion from the distal end of the locking lug 47 is inclined toward the upper outer side (end panel 34 side).

When assembling the file box 10 , as shown in FIG. 12 , the side panel 13 is folded relative to the bottom panel 12 , and the folding flap 30 is folded relative to the side panel 13 . Next, the end panel 34 is folded relative to the bottom panel 12 and the lock 44 is folded relative to the closure flap 38 . Thereafter, the closing flap 38 is folded inwardly with respect to the end panel 34 on the closing flap fold line (second fold line) 39 so that the locking piece 44 is located on the inner surface side of the side panel 13 . As a result, when each locking member 44 slides into contact with the inner surface of the side panel 13, the locking lug 47 rotates toward the direction of the locking receiving portion 23, overcomes the inner surface of the locking receiving portion 23, and falls into the cut-out portion 27 . Then, the locking recess 48 is locked to the side of the cut portion 23 of the lock receiving portion 12 . Therefore, the file box 10 of this embodiment can achieve the same operations and beneficial effects as those of the file box 10 of the first embodiment.

(fifth embodiment)

13 and 14 show the file box 100 of the fifth embodiment. In the file box 100, by providing inclined panel portions (corner portions) 106 on the side panels 104, the storage section 101 for storing documents is surrounded by the side panels 104 and end panels 119 to form an octagonal shape as shown in plan view. The present embodiment is greatly different from the other embodiments in that each closing flap 123 is formed to extend between the end panel 119 and the inclined panel portion 106 so as to prevent the closing flap 123 from protruding into the inside of the storage portion 101 .

As shown in FIG. 14, a blank forming a file box 100 includes a bottom panel (first panel) 102 having an octagonal shape as shown in plan view, in which chamfered sides 103, 103 are formed at the corners. A pair of side panels (second panels) 104, 104, are connected to the bottom panel 102 including the chamfered edge 103 and are positioned opposite each other. Each side panel 104 includes a side panel body 105 at its center and a pair of inclined panel portions 106 , 106 located at both ends of the side panel body 105 .

The side panel body 105 is connected to the bottom panel 102 between the chamfered edges 103,103. A side panel fold line (first fold line) 107 is formed on a boundary portion between the side panel body 105 and the bottom panel 102 except for the position of the lock receiving portion 108 . The lock receiver 108 has a bottom panel sloped fold line (first fold line) 110 extending on the bottom panel 102 from a branch point 109 on the side panel fold line 107, and a side panel sloped fold line (second sloped line) extending on the side panel 104. ) 111, and a cut 112 extending between the ends of these fold lines 110, 111. The cutting portion 112 in this embodiment is formed by a straight cut line. The cut-out portion 27 provided adjacent to the lock receiving portion 108 may not be provided.

The inclined panel portion 106 has a rectangular shape, and a bending line 113 is formed on a boundary portion between the inclined panel portion 106 and the side panel body 105 . Each oblique fold line 110 , 111 is formed between the branch point 109 and the bend line 113 , and the cut portion 112 is formed so that it lies on the same straight line as the bend line 113 . In the assembled state, a rear folded portion 114 having an approximately triangular shape is formed between the edge of the inclined panel portion 106 on the bottom side and the chamfered edge 103 of the bottom panel 102 . The bottom panel 102 and the inclined panel part 106 are connected to each other by the rear folded part 114, and the rear folded part 114 is made to overlap with the bottom panel 102 when the file box 100 is assembled so that the inclined panel part 106 is opposite to the side panel body 105. Bend at approximately a 45 degree angle. A rear fold fold line 115 for reducing elastic restoring force due to folding the panels backward is formed on the boundary portion (chamfered edge 103) between the rear fold 114 and the bottom panel 102, and is also formed on the inclined panel portion 106. and the rear fold 114. The rear fold fold line 115 is formed by a lead score having a fold line formed by forming marks to reduce the panel thickness of the corrugated cardboard by compression and cutting the lines formed at predetermined intervals.

A folding flap 116 provided on the inner surface of the end panel 119 is formed on an end edge of each inclined panel portion 106 of the side panel 104, and a folding flap fold line 117 is formed between the folding flap 116 and the inclined panel portion 106. on the border. An arcuate notch portion 118 corresponding to the stacking hole 121 for stacking the file boxes 100 is formed on the folding flap 116 .

A pair of end panels 119 , 119 are attached to the oppositely disposed other sides of the bottom panel 102 . In the assembled state, each end panel 119 is formed into a trapezoidal shape, the side width of which gradually narrows from the proximal end located between the chamfered sides 103, 103 of the bottom panel 102 towards the distal end located on the upper side. A stacking hole 121 and an end panel fold line 120 are formed on a boundary portion between the end panel 119 and the bottom panel 102 . The stacking hole 121 is a semi-circular hole formed in the end panel 119 and extending to the end panel 119 across the end panel fold line 120 . Further, a stacking protrusion 122 for stacking the file boxes 100 is integrally formed in a convex manner at the center of the distal end of the end panel 119 . The stacking protrusion 122 is fitted into the stacking hole 121 of another document box 100 stacked on the document box 100 .

A pair of closure flaps 123, 123 having a right-angled triangular shape are connected to both sides of the distal end of each end panel 119, and a closure flap fold line (second fold line) 124 forms a boundary between the closure flap 123 and the end panel 119 department. In the assembled state, the closure flap 123 covers the area above the rear folded portion 114, and the inner edge of the closure flap 123 (later-described locker fold line 126) is placed along the upper side of the inclined panel portion 106 of the side panel 104. . The closing flap 123 covers the upper end portion formed by the side panels 104 and the end panel 119 (opening outside), so that the appearance of the document box 100 in an assembled state becomes a nearly rectangular shape as shown in plan view.

In the assembled state, a locking member (third panel) 125 provided along the inner surface of the inclined panel portion 106 is connected to the inner edge of each closing flap 123, and a locking member fold line 126 is formed between the locking member 125 and the closing flap. 123 on the boundary section between. The locking piece 125 has an approximately quadrangular shape, and a folding lug 127 is connected to a distal end of the locking piece 125 at the lower end in an assembled state. The locking lug 127 has a triangular shape having a right angle, and a locking lug folding line 128 is formed on a boundary portion between the locking lug 127 and the locking piece 125 . The locking tab fold line 128 is formed by the reverse score line formed from the score formed from the front liner side of the corrugated board, thereby reducing the thickness of the corrugated board by compression. By locking the edge (lock portion) of the lock tab 127 to the edge of the cut portion 112 of the lock receiver 108 lifted from the bottom panel 102, the file box 100 can be kept in the assembled state.

In the assembled document box 100, as shown in FIG. 13, when the inclined panel portion 106 is folded relative to the side panel body 105, the side panel 104 is folded relative to the bottom panel 102, and the folding flap 116 is opposite to the side panel 104 (the inclined panel portion 106). Make a fold. As a result, the rear folded portion 114 is folded together with these panels to overlap the bottom panel 102 , and the inclined panel portion 106 is lifted from the inner end of the rear folded portion 114 . Next, the end panel 119 is folded relative to the bottom panel 102 , and then the lock 125 is folded inwardly relative to the closure flaps 123 , and each closure flap 123 is folded inwardly relative to the end panel 119 about a closure flap fold line 124 . Then, each locking piece 125 is rotated toward the inclined panel portion 106 of the side panel 104 , and the locking lug 127 formed at the distal end of the locking piece 125 contacts the bottom panel 102 to fold the locking lug 127 relative to the locking piece 125 . When the locking piece 125 is made to overlap the inclined panel portion 106 , the edge of the locking lug 127 is locked onto the edge of the cut portion 112 of the locking receiving portion 108 .

When the file box 100 in the fifth embodiment is assembled in the same manner as the first embodiment, the lock receiving portion 108 is three-dimensionally lifted relative to the bottom panel 102 and the side panels 104 to make the lock recessed portion by folding the lock receiving portion 125 127 can be easily locked to the locking receiver 108 . Therefore, assembly workability can be improved. Further, the closing flaps 123 are respectively provided at the four corners, so that the file boxes 100 can be stacked on each other in a stable state. The side panels 104 and the end panels 119 forming the outer peripheral panels define an octagonal shape as shown in a plan view, thereby enhancing the compressive strength of the file box 100 in the vertical direction. Further, the closing flap 123 does not protrude toward the inside to cover part of the storage part 101 , so storing and taking items can be easily completed. In the file box 100 of the first, second and fourth embodiments, when the closing flap 123 protrudes inwardly from the upper opening of the file box 100, when taking items from the file box 100 (such as fruits and vegetables), it is necessary to use a small knife, such as a cutting knife, to cut and remove the closing flap 123. On the other hand, the document box 100 in the fifth embodiment does not require such a cutting operation.

The file boxes 10, 50, 100 of the present invention are not limited to the above embodiments, and there may be many variations.

Specifically, the inclination angle of the bottom panel sloped fold line (first oblique line) 18,110 corresponding to the side panel fold line (first fold line) 15,54,107, and the side panel slope corresponding to the side panel fold line (first fold line) 15,54,107 The angle of inclination of the broken line (second oblique line) 19,111 is not specifically limited. Further, in the above-mentioned embodiment, the inclined fold lines 18, 110 of the bottom panel and the inclined fold lines 19, 111 of the side panels are respectively formed by straight lines. However, the bottom panel slanted fold lines 18, 110 and the side panel slanted fold lines 19, 111 may be formed by curved lines, respectively (see FIG. 18). Further, in the above embodiment, the tangent line 21 is formed by a straight line extending in a direction perpendicular to the side panel fold line 15 . However, the direction in which the tangent line 21 extends is not limited to the tangent line 21 extending toward the bottom panel 12, and the tangent line 21 may be formed by a curved line. The cut line 21 in the above embodiment is formed so as to extend from the end of the cut edge 25 to the distal end of the side panel slanted fold line 19 . However, the cut line 21 is formed so as to extend from the end of the cut edge 25 to the end of the side panel sloped fold line 19 to provide play.

Further, with respect to the lock receiving portion 23 , in the first variation shown in FIG. 15 , a hole 80 having a triangular shape may be formed at the proximal end portion of the lock receiving portion 23 on the side of the branch point 16 , 109 . By forming the hole 80 , the lock receiver 23 can be easily folded with respect to the bottom panel 12 and the side panel 13 . In a second variation as shown in FIG. 16 , the side panel fold line 15 may extend to the inside of the lock receiving portion 23 . However, the side panel fold line 15 is not formed so as to extend over the entire lock receiving portion 23 , and the portion where the side panel fold line 15 is not formed is left on the branch point 16 , 109 side or the cut portion 24 , 112 side of the lock receiver 23 .

As in the first to third embodiments, the lock receiving portions 23, 55 may be formed in a quadrangular shape, or in the fourth and fifth embodiments, may also be formed in a triangular shape. Further, in a third variation as shown in FIG. 17 , the lock receiving portion 75 may be formed in a pentagonal shape. In this case, the side panel oblique fold line 19 is formed by a first side panel oblique fold line 19a extending obliquely from the branch point 16 and a second side panel oblique fold line 19a extending between the first side panel oblique fold line 19a and the end of the tangent line 21. It is formed by the inclined fold line 19b of the two side panels. An angle θ2 formed between the first and second side panel inclined fold lines 19a and 19b is set as an obtuse angle. That is, the side panel slant fold lines (second slant lines) 19, 111 and the bottom panel slant fold lines 18, 110 are not necessarily constituted by one line, and may be formed by combining two lines. Further, in a fourth variation as shown in FIG. 18 , the lock receiving portion 71 may be formed in a semicircular shape. In this case, the side panel sloping fold lines (second slant lines) 72 and the bottom panel slant fold lines (first slant lines) 73 are respectively formed by curves obtained by equally dividing a circle into four parts.

As for the cut-out portion 27 , if the cut-out portion 27 is formed adjacent to the lock receiving portion 23 and the corner of the lock piece 44 falls into the cut-out portion 27 , the shape and size of the cut-out portion 27 are not specifically limited. Further, if the locking recesses 48 , 61 can be locked to the locking receiving portion 23 , a configuration in which the cut-out portion 27 is not provided may be adopted.

In the above-described embodiment, the locking lug 47 is formed to protrude from the corner of the locking piece 44 . However, for example, the fifth variation shown in FIG. 19 , inwardly recessed locking recesses 78 may also be formed at the outer end edges of the locking pieces 44 where locking lugs are not formed.

In the first to fourth embodiments, the document box 10, 50 may form a quadrangle as shown in plan view, and in the fifth embodiment, the document box 100 may form a quadrangle as shown in plan view and the storage portion 101 may form a quadrangle as shown in plan view An octagon is formed. However, in the case of the fifth embodiment, the outer shape of the file box may also be formed into an octagon as shown in plan view by providing the inclined panel portion 106 . Further, if a pair of side panels and a pair of end panels are provided, the document box can be formed into a hexagonal shape as shown in plan view, and the shape of the document box as shown in plan view can be changed arbitrarily.

In the above embodiments, the file box 10, 50, 100 is formed using corrugated cardboard. However, the document case 10, 50, 100 may be formed by stamping a blank from a sheet of corrugated resin. The material required for the stamped blank is not limited to corrugated board, it can also be single-layer hard paper (cardboard) or single-layer resin board.

In the above embodiments, the file box 10, 50, 100 is taken as an example to describe the container using the locking structure of the present invention. However, the locking structure of the present invention can also be utilized in other packaging boxes. The locking structure of the present application is not limited to containers such as file boxes or packaging boxes, but is also applicable to products in which the first panel and the second panel are continuously formed and it is necessary to lock the third panel to the second panel. These variations still achieve the same operation and benefits.

As described above, using the file box 10, 50, 100 of the locking structure of the present invention, by folding the side panel (second panel) 13, 52, 104 relative to the bottom panel (first panel) 12, 51, 102, the lock receiving portion 23, 55, 108 can be locked. Lift three-dimensionally. Alternatively, by folding the folding flap (first panel) 30 against the side panel (second panel) 13, the lock receiving portion 23 may be three-dimensionally lifted. Only by providing the locking pieces (third panels) 44, 58, 125 on the inner surface sides of the side panels (second panels) 13, 52, 104 and by folding (rotating) the folding flaps 38, 123 or the end panels 53, the locking pieces 44, 58, 125 can Locked to the locking receiver 23,55,108. That is, there is no need to assemble the file box using a complicated, high-precision positioning operation, and thus automatic assembly of the container by one device can be realized.

Next, the automatic container assembly device 200 for assembling the file box 10 will be described in detail with reference to FIGS. 20 to 23 . In this embodiment, the document box 10 in the fourth embodiment will be described as an example. However, if parts of the automatic container assembling apparatus 200 and the like are changed, the file boxes 10 of the first and second embodiments can also be automatically assembled in the same manner.

As shown in FIG. 20 , the container automatic assembly device 200 includes a plate supply device 201 , wherein the stamped blanks are set in a stacked state, and a container assembly device 213 for assembling containers using the blanks provided by the plate supply device 201 .

As shown in FIGS. 20 and 21 , the board supply device 201 includes a board feeding section 202 in which flat blanks are set in a stacked state, and a transfer section 205 that transfers the blanks set in the board feeding section 202 to a container assembly device 213 .

The board feeding part 202 includes a transfer table 203 on which cylindrical rollers are installed, and a lifting part 204 movable in a vertical direction by, for example, an air cylinder. The transfer table 203 moves the blanks placed thereon and set in a stacked state to the lifting portion 204 having the same height position as the transfer table 203 . Lifting section 204 moves the supplied blank to a plate feeding position where it can be removed by transfer section 205 . The positioning of the blank at the feeding position can be done by means of detection, such as limit switches.

The transfer section 205 includes a pair of first guide rails 206, 206, which support both sides of the blank, a pair of take-off parts 207, 207, by which the blank of the lifting part 204 is set on the first guide rails 206, 206, and a transfer part 210, which moves The blank-to-container assembly device 213 is set on the first rail 206 . The conveying part 205 is disposed above the board feeding part 202 . The first guide rails 206, 206 have an L-like shape in section, so that the first guide rails 206, 206 can be moved in a direction perpendicular to the conveying direction extending toward the container assembly device 213 by, for example, cylinder driving. Each extraction member 207 includes an upwardly extending arm portion 208 and is connected to a driving tool such as an air cylinder. A pair of suction members 209, 209 connected to a suction pump are mounted on the take-out member 207 in a downwardly protruding manner. The conveying member 210 is movably mounted on a conveying track 211 centrally located on the first rails 206 , 206 and above the first rails 206 , 206 . The conveying part 210 may be advanced and retracted along the conveying rail 211 by a motor. The propulsion part 212 is mounted on the transport member 210 . The pusher 212 pushes a closure flap 38 forming one end of the blank to move (or slide) the blank along the first rail 206 .

After the first guide rails 206, 206 enter the receiving state, wherein the first guide rails 206, 206 are moved out of the space indicated by the dotted line in FIG. , thereby lifting the blank to a position above the first rails 206,206. Next, after the first guide rails 206, 206 enter the conveying state, wherein the first guide rails 206, 206 are moved into the space of a dot-dash line in Fig. 20, the conveying part 205 releases the billet sucked by the suction part 209, thereby the billet Set on the first rails 206,206. Thereafter, the blank is pushed along the first rail 206 by the conveying part 210 to move the blank to the container assembly device 213 . By repeating this series of steps, the blanks are supplied to the container assembling device 213 one by one.

As shown in FIGS. 20 and 22 , the container assembly device 213 includes a pair of second guide rails 214 , 214 , a pusher part 215 , a guide frame 220 , a positioning part 232 , a receiving part 234 , a swing part 237 , and a discharge ramp 241 . The container assembly device 213 is placed adjacent to the plate supply device 201 . In the following description, the vertical direction in which the pushing member 215 moves is the pushing direction, the conveying direction of the blank, that is, the direction extending between the pair of end panels 34 is the longitudinal direction, and between the pair of side panels 13,13 The extending direction between them is the width direction.

The second guide rail 214 has an L-like shape in cross-section, is fixed so as to lie on the same straight line as the first guide rails 206 , 206 in the conveying state, and receives the blank from the conveyance section 205 . Preferably, the surface of each second guide rail 214 on which the blank is placed is located below the surface of each first guide rail 206 , so as to prevent one end edge of the second guide rail 214 from interfering with the blank when receiving the blank.

The pushing member 215 is formed of a block whose lower end edge has the same size as the bottom panel 12 and whose lower end is opened. The pushing member 215 pushes the blank on the second guide rails 214 , 214 in a downward direction, ie towards the guide frame 220 . An upwardly protruding mounting shaft 216 is provided on the pushing member 215 , and the mounting shaft 216 is connected to the lifting unit 217 . The lift unit 217 includes a pair of guide shafts 218, 218, and a lift member 219 through which the guide shaft 218 is guided and inserted. The upper end of the connecting rod is pivotally mounted on the lift member 219, and the lower end of the connecting rod is pivotally mounted to the crank member. The crank member raises or lowers the lifting member 219 within a predetermined range of the connecting rod by the rotation of the driving tool. As a result of raising or lowering the lifting member 219 in this way, the advancing member 215 is advanced or retracted between the outer region above the second guide rail 214 and the inner region in the guide frame 220 .

The guide frame 220 is disposed under the second guide rail 214, and when the blank is pushed down by the pushing member 215, folds the blank portion except the closing flap 38. Referring to FIG. The guide frame 220 includes a stopper 221 protruding upward to a position above the second guide rail 214, and blocks the transferred blank at a set position. Further, the guide frame 220 includes a folding flap folded portion 225 , a side panel folded portion 226 , a lock member folded portion 227 , and an end panel folded portion 228 so as to be positioned at the peripheral portion of the bottom panel 12 . Specifically, as shown in FIG. 20 , the guide frame 220 includes a first piece 222 located below the side panel 13 , a second piece 223 located below the closing flap 38 , and a first piece 223 located below the folding flap 30 and the locking member 44 . Three blocks 224. Folds 225-228 are formed on blocks 222-224, respectively.

22 and 23, each fold flap fold 225 is formed by a curved surface (round chamfered surface) formed at the corner of the third piece 224 extending along the fold flap fold line 31, and The folding flap 30 is folded upwards relative to the side panel 13 . Each side panel fold 226 is formed by an inclined surface formed on the inner surface of the first block 222 extending along the side panel fold line 15 , and folds the side panel 13 upward relative to the bottom panel 12 . Each lock fold 227 is formed by an inclined surface formed on the inner surface of the third piece 224 extending along the lock fold line 46 and folds the lock 44 upwardly relative to the closure flap 38 . Each end panel fold 228 is formed by the upper end of the second block 223 so as to extend in the width direction between the third blocks 224 , 224 and folds the end panel 34 upward relative to the bottom panel 12 . In this embodiment, the installation positions (heights) and inclination angles (or curvatures) of the folding portions 225-228 are set so that the folding flap 30, the side panel 13 and the locking member 44, and the end panel 34 are folded in this order.

A lock guide part 229 is formed on the guide frame 220 . The lock guide 229 guides the lock 44 when the end panel 34 is folded relative to the bottom panel 12 and the lock 44 is rotated together with the end panel 34 such that the lock 44 and the side panel 13 are placed in parallel. Each lock guide 229 is formed by an inclined surface formed by the inner surface side of the third piece 224 between the fold flap fold 225 and the lock fold 227 . Specifically, the lock guide portion 229 is formed so as to incline from the outside to the inside in the width direction from the lock folded portion 227 side toward the fold flap folded portion 225 side in the length direction.

The guide frame 220 also includes support portions 230 , 231 for maintaining the folded state of the side panel 13 and the end panel 34 relative to the bottom panel 12 . The side panel support part 230 is formed by extending a lower portion of the side panel folding part 226 of the first block 222 downward. The end panel support portion 231 is formed by a strip-shaped member extending outside the end panel fold line 31 in the vertical direction.

The positioning part 232 has a quadrangular cylindrical shape, and is disposed between the first block 222 and the third block 224 having the side panel folded portion 226 . When the closing flap 38 is folded relative to the end panel 34 , the positioning member 232 pushes the locking piece 44 inward so that the locking piece is placed on the inner surface side of the side panel 13 . Specifically, in the pushing state where the blank is pushed into the guide frame 220 by the pushing part 215 , the positioning part 232 is placed outside the locking part 44 in the width direction, and the lower end of the positioning part 232 is placed above the side panel 13 . A connection shaft 233 extending outward in the width direction is connected to one end of the positioning member 232, and the connection shaft 233 is connected to a driving tool such as an air cylinder. Such a configuration allows the positioning member 232 to move inward or outward in the width direction.

The receiving member 234 is plate-shaped. The receiving part 234 is disposed between the first block 222 having the side panel fold 226 and the third block 224 located below the positioning part 232 . As the closure flap 38 is folded relative to the end panel 34 , the receiving member 234 advances beneath the lower surface of the bottom panel 12 to position and retain the bottom panel 12 . Specifically, when the blank is in the pushed state, the receiving part 234 can be placed under the underside of the bottom panel 112, or it can be placed so that the inner end of the receiving part 234 is placed outside the bottom panel 12 in the width direction. . A driving means, such as an air cylinder, is connected to the outer side of the receiving part 234 in the width direction so that the receiving part 234 can move inward or outward in the width direction. The receiving part 234 is configured so that the receiving part 234 and the positioning part 232 can be pushed and retracted by a driving tool by integrally connecting the receiving part 234 and the positioning part 232 outside the receiving part 234 in the width direction.

The swing member 237 is movably provided along the length direction of the file box 10 between the second block 223 having the end panel folding portion 228 and the end panel support portion 231, and folds the closing flap 38 inwardly with respect to the end panel 34. . Specifically, the swing member 237 is fixed to the swing shaft 235 provided to extend in the width direction. Crank members 236 are provided at both ends of the swing shaft 235, and the crank members 236 are rotated by the engine. Due to the rotation of the crank member 236 , the swing shaft 235 swings in the length direction from a region near the second block 223 to a region near the end panel support portion 231 . The swing member 237 is wedge-shaped, and the panel thickness of the swing member 237 gradually decreases from the cylindrical proximal end portion 238 fixed to the swing shaft 235 to the distal end of the swing member 237 . Before operating the swing member 237, that is, when the blank is in an unfolded state, the swing shaft 235 is placed on the second block 223 side, the tapered distal end portion 239 is placed on the upper side, and placed on the lengthwise direction. The inner contact surface 240 is inclined downward from the outer side to the inner side of the guide frame 220 . After operating the swing member 237, that is, when the blank is in the folded state, the swing shaft 235 is placed on the side of the end panel support part 231, the distal end part 239 is placed on the inner side in the length direction, and the contact surface 240 is placed on the lower side so that Press down on the closure flap 38 .

The unloading ramp 241 is a plate-shaped member. The unloading ramp 241 is arranged under the guide frame 220 at a predetermined angle, and the assembled document boxes 10 are unloaded to the outside of the container assembly device 213 through the unloading ramp 10 .

Then, the operation method of the assembling device will be specifically described.

When the blank of the file box 10 is fed into the second guide rail 214 from the plate supply device 201 , the blank is stopped at a predetermined position on the second guide rail 214 by the stopper 221 . Then, the pushing member 215 moves downward and contacts the bottom panel 12 on the guide rail. When the pushing member 215 moves further downward, the blank is elastically deformed so that the blank is removed from the guide rail and falls from the guide rail onto the guide frame 220 .

When the pushing member 215 moves further downward, the folding flap 30 of the blank is folded relative to the side panel 13 through the folded portion 225 of the flap, and at the same time, the locking piece 44 of the blank is folded relative to the end panel 34 through the folded portion 227 of the blank. . Then, the side panel 13 is folded relative to the bottom panel 12 by the side panel folding part 226 , and thereafter, the end panel 34 is folded relative to the bottom panel 12 by the end panel folding part 228 . While the end panel 34 is being folded, the lock 44 folded before the end panel 34 is folded is guided so as to be placed in parallel with the side panel 13 by the lock guide 229 .

After the blank is pushed by the push assembly 215 to become the pushed state, the push assembly 215 moves upward. In such a pushed state, as shown in FIG. 22, the outer sides of the side panel 13 and the outer side of the end panel 34 are respectively supported by the support portions 230, 231 of the guide frame 220, so that the file box 10 is kept in the state shown in FIG. . In this state, each locking piece 44 is placed above the upper end of the side panel 13, and the locking lug 47 side of the distal end of the locking piece 44 is in pressure contact with the inner portion of the first block 222 due to the elastic restoring force of the blank. surface. Therefore, assuming that each closing flap 38 is folded relative to the end panel 34 in this state, the locking piece 44 interferes with the side panel 13, thereby hindering the folding operation.

Next, in the present embodiment, as shown in FIG. 23 , the receiving member 234 is moved inward in the width direction so that the bottom surface of the bottom panel 12 is placed and held on the receiving member 234 . Then, the positioning member 232 is moved inwardly in the width direction so that the locking piece 44 is placed more on the inner surface side than on the side panel 13 by pushing the positioning member 232 . In this state, the swing member 237 swings inward in the length direction.

When the swing member 237 swings, the contact surface 240 contacts the closure flap 38 to push the closure flap 38 so that the closure flap 38 is folded relative to the end panel 34 . As the closure flap 38 is folded, the lock 44 connected to the closure flap 38 is integrally rotated along the inner surface of the side panel 13 . In this stage of operation, each locking piece 44 is placed more on the inner surface side than on the side panel 13 by the positioning member 232, so there is no possibility for the locking piece 44 to interfere due to the initial stage of swinging of the swinging member 237. The upper end of the side panel 13 hinders the folding operation.

As shown in FIG. 10, when the closing flaps 38 are rotated to a position where each closing flap 38 extends in a direction perpendicular to the end panel due to the swing of the swinging member 237, the locking performed by the positioning member 232 The positioning of member 44 is released. Therefore, due to the elastic contraction force, the locking piece 44 and the side panel 13 are in tight contact, and each locking recess 44 on the distal end side of the locking piece 44 is locked to the lifted locking between the bottom panel 15 and the side panel 13 Receiver 23.

After the automatic assembly of the document case 10 is completed in this way, the swing member 237 moves outward in the length direction to the inoperative position, and at the same time, the positioning member 232 and the receiving member 234 move outward in the width direction. In this state, the pushing member 215 moves downward, and then starts to assemble the next file box 10 using the blank. Alternatively, the pushing member 215 moves downward in a state where no blank for forming the next file box 10 is set. Due to such operation, with respect to the file box 10 assembled earlier than the next file box 10, the bottom panel 12 of the next file box 10 or the pushing member 215 itself on the top of the file box 10 contacts the crosspiece (crosspiece) panel 38 to thereby The crosspiece panel 38 is pushed downward, so that the file box 10 is unloaded to the outside of the container assembly device 213 through the unloading ramp 241 .

As described above, the container assembling device 213 of the present invention includes the positioning member 232 for performing positioning of the locking piece 44, therefore, it is possible to prevent the locking piece 44 from interfering with the end edge of the side panel 13, and prevent the locking piece 44 from interfering with the end edge of the side panel 13, and prevent the locking piece 44 from being unable to The situation of being disposed on the inner surface side of the side panel 13 occurs. Further, when the closing flap 38 is folded relative to the end panel 34 , the receiving part 234 receives the bottom panel 12 of the file box 10 , thus preventing the file box 10 from moving due to the force generated by the swinging part 237 . Further, when the closing flap 38 is rotated by the swing member 237, the distal end of each locking piece 44 is disposed on the inner surface side of the side panel 13, after which the positioning of the locking piece 44 by the positioning member 232 is released. When the locking piece is rotated to a predetermined position, the locking piece 44 is locked. Therefore, the file box 10 can be easily assembled automatically.

The configuration of the container assembling device 213 of the present invention is not limited to the above-mentioned embodiments, and can be varied in many ways.

For example, the configuration of the guide frame 220 for folding the side panels 13 , the folding flaps 30 , the end panels 34 and the locking pieces 44 is not limited to the above-mentioned configurations, and there may be many variations. Further, the document box 10 that can be automatically assembled by the container assembling device 213 is not limited to the document box 10 having the configuration in which each closing flap extends between a pair of side panels 13 described in the respective embodiments. Even when the file box 10 adopts the configuration in which each closure flap 38 is provided at the corner between the side panel 13 and the end panel 34 described in the fifth embodiment, it is possible to automatically use the container assembly device 213 Assemble the file box 10. Further, although the description is made using the document box 10 in the fourth embodiment that does not include the stacking protrusion 42 for stacking the document boxes 10, the document box including the stacking protrusion 42 as described in the first embodiment 10 can still be assembled automatically by the container assembly device 213. Further, the swing member 237 can perform the function of folding the closing flap 38 relative to the end panel 34 and the function of folding the end panel 34 relative to the bottom panel 12 . By employing such a configuration, the number of parts can be reduced.

Symbol Description

10 file boxes (containers)

12 Bottom panel (first panel)

13 side panel (second panel)

15 side panel polyline (first polyline)

16 branch points

18 Bottom panel side slanted fold line (first slash)

19 side panel side inclined fold line (second slash)

23 lock receiver

24 cutting department

27 Cut the lower part

31 end panel folding line

34 end panels

38 closed wing

39 Closed flap fold line (second fold line)

44 Locking piece (third panel)

46 lock fold line

47 locking lugs

48 Lock recessed part (lock part)

200 container automatic assembly device

201 board supply device

213 assembly device

214 second rail

215 propulsion components

220 guide frame

225 folding flap folding part

226 side panel folding part

227 locking piece folding part

228 end panel folding part

230 side panel support

231 end panel support

232 positioning components

234 receiving components

237 swing parts

241 unloading ramp

Claims (6)

1. a latch-up structure, including:

First panel；

Second panel, described second panel and described first panel are formed continuously and fold relative to described first panel；

3rd panel, described 3rd panel is arranged along the inner surface of described second panel；

Locking acceptance division, the first oblique line that described locking acceptance division is extended by the 3rd panel side on from the branch point on the broken line between described first panel and described second panel towards described first panel, the second oblique line that described 3rd panel side from described branch point towards described second panel extends, and the cutting part of extension is defined between the far-end and the far-end of described second oblique line of described first oblique line, described locking acceptance division extends in the assembled state in an inclined manner between described first panel and described second panel；And

Sticking department, described sticking department is formed on described 3rd panel, and is set to be locked into the cutting part side of described locking acceptance division under described assembled state.

2. a container, including:

First panel；

Second panel, described second panel and described first panel are formed continuously and fold relative to described first panel；And

3rd panel, described 3rd panel is arranged along the inner surface of described second panel,

Wherein said container farther includes:

First oblique line, described first oblique line from the branch point the broken line between described first panel and described second panel towards described first panel on the 3rd panel side extend, and tilt relative to described broken line；

Second oblique line, described second oblique line from described branch point towards described second panel described 3rd panel side extend, and tilt relative to described broken line；

Cutting part, described cutting part extends between the far-end and the far-end of described second oblique line of described first oblique line；

Locking acceptance division, described locking acceptance division is defined by described first oblique line, described second oblique line, and described cutting part, and extends between described first panel and described second panel in an inclined manner in the assembled state；And

Sticking department, described sticking department is formed on described 3rd panel, and locks onto the cutting part side of described locking acceptance division by assembling described 3rd panel, so that described 3rd panel extends along the inner surface of described second panel.

3. container according to claim 2, what which provide the cutting part side that is placed in contiguous described locking acceptance division cuts portion, portion is cut described in falling in the corner of the 3rd panel described in when assembling, and a part for described cutting part is formed by the described edge cutting portion.

4. the container according to Claims 2 or 3, wherein said container includes:

Bottom panel, described bottom panel forms described first panel；

A pair side panel, the pair of side panel forms described second panel of the both sides being connected to described bottom panel and positioned opposite to each other；

Pair of end panel, the pair of end plates are connected to the other both sides of described bottom panel and positioned opposite to each other；

Guan Bi wing plate, described Guan Bi wing plate is connected to described end plates and covers a part for the upper end formed by described side panel and described end plates in the assembled state；And

Locking piece, described locking piece is formed and connected to described Guan Bi wing plate by described 3rd panel, and

Wherein when described locking piece is folding relative to described Guan Bi wing plate, described locking piece is arranged on the inner surface of described side panel by folding described Guan Bi wing plate relative to described end plates, and described sticking department is locked by rotating described sticking department towards the cutting part of described locking acceptance division.

5. container assembles a device, and described container assembles device and uses the blank for described container to assemble described container, and described container assembles device and includes:

Bottom panel；

A pair side panel, the pair of side panel is connected to described bottom panel both sides and positioned opposite to each other；

Pair of end panel, the pair of end plates are connected to the other both sides of described bottom panel and positioned opposite to each other；

Guan Bi wing plate, described Guan Bi wing plate is connected to described end plates and covers a part for the upper end formed by described side panel and described end plates in the assembled state；And

Locking piece, described locking piece is connected to described Guan Bi wing plate, and is locked by arranging along the inner surface of described side panel in the assembled state,

Wherein said container assembles device and includes:

Lead-frame, described lead-frame is positioned at the outer part of described bottom panel, and there is the side panel folding part for folding described side panel relative to described bottom panel, for folding the end plates folding part of described end plates relative to described bottom panel, and for folding the locking piece folding part of described locking piece relative to described Guan Bi wing plate；

Propulsive element, described propulsive element with can advance and retractable mode be arranged on the inside and outside of described lead-frame, and for described blank being pushed described lead-frame by pressing described bottom panel, fold described side panel, described end plates and described locking piece thereby through respective folding part；

Positioning element, described positioning element is movably disposed at side, side panel folding part, and by inwardly promoting described locking piece that described locking piece is positioned at the inner surface side of described side panel；And

Tilting member, described tilting member is movably disposed at side, end plates folding part, for folding described Guan Bi wing plate relative to described end plates, and rotates described locking piece to the inner surface of described side panel thus locking described locking piece.

6. container according to claim 5 assembles device, farther includes to receive parts, and described reception parts are movably disposed on the bottom side of described lead-frame, and receive the basal surface side of described bottom panel.